mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-26 00:41:17 +00:00
50 lines
1.3 KiB
Diff
50 lines
1.3 KiB
Diff
From c85a1ccbc6b1cab51a5fe5b916bcaf40bcd9096c Mon Sep 17 00:00:00 2001
|
|
From: Phil Elwell <phil@raspberrypi.org>
|
|
Date: Mon, 21 Jan 2019 12:19:57 +0000
|
|
Subject: [PATCH] overlays: mcp23017: Support the MCP23008
|
|
|
|
Add an 'mcp23008' parameter to enable support for the MCP23008 device.
|
|
|
|
See: https://github.com/raspberrypi/linux/issues/2818
|
|
|
|
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
|
|
---
|
|
arch/arm/boot/dts/overlays/README | 2 ++
|
|
arch/arm/boot/dts/overlays/mcp23017-overlay.dts | 10 +++++++++-
|
|
2 files changed, 11 insertions(+), 1 deletion(-)
|
|
|
|
--- a/arch/arm/boot/dts/overlays/README
|
|
+++ b/arch/arm/boot/dts/overlays/README
|
|
@@ -1212,6 +1212,8 @@ Params: gpiopin Gpio pin
|
|
|
|
addr I2C address of the MCP23017 (default: 0x20)
|
|
|
|
+ mcp23008 Configure an MCP23008 instead.
|
|
+
|
|
|
|
Name: mcp23s17
|
|
Info: Configures the MCP23S08/17 SPI GPIO expanders.
|
|
--- a/arch/arm/boot/dts/overlays/mcp23017-overlay.dts
|
|
+++ b/arch/arm/boot/dts/overlays/mcp23017-overlay.dts
|
|
@@ -44,11 +44,19 @@
|
|
};
|
|
};
|
|
};
|
|
-
|
|
+
|
|
+ fragment@3 {
|
|
+ target = <&mcp23017>;
|
|
+ __dormant__ {
|
|
+ compatible = "microchip,mcp23008";
|
|
+ };
|
|
+ };
|
|
+
|
|
__overrides__ {
|
|
gpiopin = <&mcp23017_pins>,"brcm,pins:0",
|
|
<&mcp23017>,"interrupts:0";
|
|
addr = <&mcp23017>,"reg:0";
|
|
+ mcp23008 = <0>,"=3";
|
|
};
|
|
};
|
|
|